Jump to content

Stereo Only Works Sometimes, Amp Ground?

TravisAZ

By TravisAZ
in Audio, Electronics & Software

Recommended Posts

TravisAZ Enthusiast

TravisAZ

Posted
Posted

Hey guys, I have a weird problem with my 2001 yukon. First off, I have only had the vehicle a couple of months, and it came with a crap-tastic dual stereo that I see @ walmart for like 40$.

 

The problem is that about 50% of the time when I start the truck, I get lights and full fuctionality at the head unit, but no sound to the speakers. Once the vehcile is started, and there is no sound, there is no way to get it to come on - i.e. turning the head unit on off, switching sources, etc.

 

The wierd thing is it is totally random. Sometimes it is when I first start the truck up for the day. Sometimes it is after I stop some where and turn the truck on/off. Sometimes it works several times in a row, and sometimes it doesn't work several times in a row. The kicker is once the vehicle is running, the stereo either works or deosn't work (whatever it decided to do when I started it) until the vehicle is shut down again. I have never had the stereo quit on me while I was driving, or start up if it wasn't working while I was driving. This seems to eliminate a loose connection somewhere as a potential problem, as you would think it would cut in/out as the truck was driven over bumps, etc.

 

It looks like the truck probably had the CD player in it originally, as I have the stand-alone tape deck down below the climate control. My hunch is the previous owner had some sort of DVD system in there or something and took it out and put the dual in before he sold it. There is a mess of unattached wires under the passengers seat, and there is a GPS antenna on the drives side rear glass. There are no BOSE markings anywhere in the vehicle. Also, I do have the rear seat audio controls and ON-Star.

 

At first I thought the head unit was getting hot or something, or was just a piece of junk, but now I am wondering if there is an amp somewhere that is shorting out or something. Did my truck come with an AMP? IF so, where the heck would it be located? Is it possible I have the BOSE system even though there are no markings? My 2003 Silvy SS had BOSE nameplates EVERYWHERE.

 

Here is a pic of the wiring harnesses behind the stereo, which seem original and un-molested.

 

IMG00115.jpg

  • 2 weeks later...
ChRoNo16 Enthusiast

ChRoNo16

Posted
Posted

If you have the rear audio controls, chances are there is an in line amp somewhere, Bose or not. they are popular now. YOu need a bypass wiring harness for the amp, its killing your sound because the head unit cant be wired to it nice. Im sorry I dont have time to find the right one for you. But try Crutchfield, they should have exactly what you need to get the unit working. Maybe a nicer head unit for you too!

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,902
    Total Members
    8,960
    Most Online
    whenindoubtuseahammer
    Newest Member
    whenindoubtuseahammer
    Joined

  • Who's Online   2 Members, 0 Anonymous, 387 Guests (See full list)

  • Latest Articles

  • Posts

    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      Its no wonder you've gravitated to the oil types and brands you have in later years after trying certain brands and one being a specialty oil or at least very hard to come by up here and the other would have been a commonly found oil of the era and the vastly different outcomes as a result to using the vehicles in question the same distance for an OCI . It shows what marketing hype can do without actually having the product to back up the claims and that is no different now with the insane claims that are written on the side of a bottle of oil from some of the off the shelf oils.    What has surprised me and I was already finding this out before I bought my truck with the GDI engine, that this newer fancy technology that seemingly would suggest better fuel economy/emissions with this high pressure spray of fuel is not in reality kind at all to the engine or at least the oils life. Yet they insist on claiming long OCI with this technology just like they did with the port or similar type fuel injection systems when in reality its a step back in oil life to have a GDI system.    I think the mistake your making Grumpy is that your not sending your samples to Blackstone and getting the feel good glowing report that you can run it another 1000 or more miles and then send another sample where they say run it yet another 1000 miles and on and on it goes until your sending in something that looks a lot like road tar and then they may suggest you change your oil within the next 1000 miles 😆
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      I am guessing that engines of that design back then had a better ability to be abused and survive longer than a new design engine with the long timing chain and the overhead cams and phasers etc. But I would never guess that an engine could go that far and not fail spectacularly or at least die a slow death. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      In the 80's 90's I'd run Honda's 7,500 miles between changes using Red Line HP 5W20 and do it for hundreds of thousands of miles with issues. Back in the day it was an SAE 20 with the HTHS of a SAE 30 and SN add load. It was also very polar. Oxidation VOA was over 120. Besides those motors were SPFI and lean burn tech. I could have likely run it longer but never did.    We had a Toyota bought new I ran on Pennzoil's latest and greatest synthetic of the day with "Penthane". A made up word for a very low dose of PAO. Tried 7,500 mile OCI's in that Group III/VI chemistry and the rings tapped out at 90K. Rocker box wasn't as bad as the one Punch put up but it wasn't good either. Also a SPFI motor.    I'm around 3,750 across the board on these GDI monsters and the oil it tapped out by then usually on TBN/TAN crossover and color. Red Line HP Euro.    The AMSOIL SS brochures tell you to follow the OEM values for the service class but that it can be run up to 25K if monitored. I can't imagine what motor could go that distance and not tap out. I've never owned one.    Yes, I know. Lot's of people do. I'm just not going to be one of them. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I knew a guy in the early 80's that bought a new Monte Carlo and ran it a 100,000 miles without ever changing the filter or the oil. Just kept adding. It looked like that inside.     
    • whenindoubtuseahammer
      My First Project and GMC has me stumped

      By whenindoubtuseahammer · Posted

      Good evening. I was lucky enough to get passed down to me a 2007 GMC LBZ that was my great uncle's. While the underside and rockers are more or less gone I feel like with time I can restore it to working order since it only has 110,000 miles and he put nearly every option he could get without getting the new body style since he did not trust DEF. So far I have done everything I can think of but when I put the key into the ignition nothing happens. I put 2 brand new batteries in it. Cleaned the terminals. Check all the fuses and relays and they all pass with my multimeter. I know I'm missing something that I just cant think of. The only odd thing is the OBD2 port works which makes me think its not the mega fuse. Any advice would be greatly appreciated. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...